JPS5739343A - Decision apparatus of corrosion velocity - Google Patents

Decision apparatus of corrosion velocity

Info

Publication number
JPS5739343A
JPS5739343A JP11422480A JP11422480A JPS5739343A JP S5739343 A JPS5739343 A JP S5739343A JP 11422480 A JP11422480 A JP 11422480A JP 11422480 A JP11422480 A JP 11422480A JP S5739343 A JPS5739343 A JP S5739343A
Authority
JP
Japan
Prior art keywords
power source
piece
electric potential
polarization
capacitor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP11422480A
Other languages
Japanese (ja)
Inventor
Masayuki Suzuki
Tomokazu Domon
Tomoko Sato
Kenichi Sugano
Yuichi Sato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP11422480A priority Critical patent/JPS5739343A/en
Publication of JPS5739343A publication Critical patent/JPS5739343A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
    • G01N17/02—Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Environmental Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)

Abstract

PURPOSE:To detect the polarization electric potential by removing various kinds of noises induced in a packaging apparatus, by providing a filtering apparatus damping the noise of a specific frequency components from the signal of polarization electric potential. CONSTITUTION:A pulse power source 11 of a constant quantity of electricity is connected with a counter electrode 3 and a sample metallic piece 1. This power source 11 is composed of a direct current constant voltage power source 6, a capacitor 5 and a relay 7, and electric charge charged in the capacitor 5 is instantaneously supplied to the piece 1. The surface polarization electric potential of the piece 1 is detected with a reference electrode 2 as the standard and is inputted into a buffer amplifier 12. A filter apparatus 13 such as a low-pass filter or notch filter, is connected with the amplifier 12. The objective noise of specific frequency component to be damped by the apparatus 13 is the one mixing the data of time curve i.e. polarization value-time of potential difference signal recorded on a potential difference recorder 8 at and after an early stage part.
JP11422480A 1980-08-20 1980-08-20 Decision apparatus of corrosion velocity Pending JPS5739343A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11422480A JPS5739343A (en) 1980-08-20 1980-08-20 Decision apparatus of corrosion velocity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11422480A JPS5739343A (en) 1980-08-20 1980-08-20 Decision apparatus of corrosion velocity

Publications (1)

Publication Number Publication Date
JPS5739343A true JPS5739343A (en) 1982-03-04

Family

ID=14632337

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11422480A Pending JPS5739343A (en) 1980-08-20 1980-08-20 Decision apparatus of corrosion velocity

Country Status (1)

Country Link
JP (1) JPS5739343A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58162853A (en) * 1982-03-23 1983-09-27 Toshiba Corp Deciding apparatus of corrosion rate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58162853A (en) * 1982-03-23 1983-09-27 Toshiba Corp Deciding apparatus of corrosion rate

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